Hi; On 15 November 2015 at 19:32, Allin Cottrell <cottr...@wfu.edu> wrote: > I'm trying to set a custom background for a GtkEntry (as a temporary thing, > by way of an alert for invalid input). I can do that fine for gtk 2 using > gtk_widget_modify_base(), but am struggling with gtk 3.
Use: gtk_style_context_add_class (gtk_widget_get_style_context (entry), GTK_STYLE_CLASS_ERROR); Themes will usually honour this style class for entries, and will set a red "glow" around it. Alternatively, use a custom CSS snippet by using a GtkCssProvider associated with the default screen, and define your own error class, e.g. .error-entry { background-color: red; } provider = gtk_css_provider_new (); gtk_css_provider_load_from_data (provider, css_definitions, -1, NULL); gtk_style_context_add_provider_for_screen (gdk_screen_get_default (), provider, GTK_STYLE_PROVIDER_PRIORITY_APPLICATION); Then add and remove the "error-entry" style class on the GtkEntry as appropriate. My strong suggestion is not not hijack the style machinery for this case, and use the system already in place. Ciao, Emmanuele. -- https://www.bassi.io [@] ebassi [@gmail.com] _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list